问题
选择题
This kind of food _____ cool, clean and dry according to the instruction. [ ]
A. should be carried
B. must be put
C. should be placed
D. must be kept
答案
答案:D
This kind of food _____ cool, clean and dry according to the instruction. [ ]
A. should be carried
B. must be put
C. should be placed
D. must be kept
答案:D